Vorker drafts client campaigns, builds the monthly reports, answers complaints and invoices the retainers. Built for agencies of 1-5. You approve everything.

No. Every campaign, report and reply is drafted and then waits for you. You can read it, edit it, reject it, or approve it and schedule it. A list of 4 812 people is exactly why the button exists.
It is built for exactly that shape: more client stores than people. The repeating work per store, campaigns, reports, invoices, is what Vorker takes, so head count stops being the ceiling on client count.
Yes. It learns each store from your briefs, its site and what you have approved before, and keeps them apart. The candle brand does not sound like the sneaker brand, and you correct anything that drifts.
From what you give it: the exports and sheets you already pull for reporting. Vorker assembles and writes, it does not invent a number, and you approve the report before the client sees it.
No. Everything goes out from your addresses, on your paper, in your name, after your approval. To the client it looks like the agency simply got faster.
No. You brief Vorker the way you brief a colleague, and it works inside the tools you already have: your inbox, your sheets, your accounting. The reports and invoices arrive as ordinary PDFs.